Sue Bell has informed us that she plans to retire from her position as Senior Vice President of Blue Nile, Inc. effective
June 15, 2012. Ms. Bell currently oversees the merchandising, planning and diamond supply functions. Ms. Bell has been with Blue Nile since September 2001, and her contributions to Blue Nile are greatly appreciated. Blue Nile has
initiated a search for a new executive in charge of merchandising, planning and diamond supply functions.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.